Vibrator for alternating-current rectifiers



Nov; 27, 1928. 1,693,491

c. E. OGDEN VIBRATOR FOR ALTERNATING CURRENT RECTIFIERS Filed Oct. 2, 1922 Ayn-W702:

5x a v curve of lower voltage than the battery voltage represented by line B-V in Figure 1, as for instance at X, there is a resulting discharge from the battery until the alternating voltage equals the battery Voltage. Where the closing point on the curveAC is at a point of higher voltage than the battery volt- .age, as for instance X only a fraction of theavailable voltage of the alternation is taken advantage of for battery charging. In either case the charging rate is less than the maximum available from the alternating voltage delivered byv the transformer, resulting in impaired efficiency of the rectifier.

The point of separation of the contact points 5 and 6 is governed by the tension of said spring 4. Where the cutting out or opening point of the contacts 5 and 6 is on the curve AC, at a point of higher voltage than the battery voltage, as for instance at the point Y destructive sparking occurs between the contacts 5 and 6. If at a point of lower voltage than the battery voltage, as for instance the point Y a discharge from the battery takes place. In either event there is a resultant lower general efficiency and performance of the rectifier.

Since it is impracticable to manufacture steel of uniform'thickness and tension in large quantities it has heretofore been necessary to provide a spring having initial tension greater than required and then to remove the excess tension little by little by flexing the spring until the proper tension is empirically attained. This method is obviously quite slow and expensive and it is further exceedingly difficult to remove exactly the proper amount of tension, and if too much tension is removed the value of the spring for the purpose is destroyed. 'By means of the tension spring 9 of my device and the screw adjustment, the outer end of the tension spring bearing on the vibrator spring above the end of the armature 1, the tension of the vibrator spring may be very simply and expeditiously adjusted thru a wide range, and the initial tension of the vibrator spring is therefore a matter of littie it any importance. It is thus possible to use vibrator springs of varying thickness and initial tension,and such springs are not subject to destruction thru adaptation to the intended use.

It will thus be seen that by the provision of an auxiliary tension spring in connection with means for adjusting the distance between battery charging contacts I have made it possible to control by'means of very simple operations the points of closing and opening of such contacts relative to the alternating voltage, thus synchronizing the vibrator oscillations with the supply line frequency. As such adjustments may be varied within a wide ran e it is possible to take care very readily 0 any variation in the vibrator frequency caused by deterioration arising from heat or other causes.

Having thus fully described my invention what I claim to be new and desire to secure by Letters Patent is 1. In a vibrating rectifier, the combination with a magnet and a contact point, of a vibrator comprising an armature, a vibrator spring mounted and having one of its ends secured on said armature, a contact point on the free end of said vibrator spring arranged to make contact with said first mentioned point, a tension member arranged to bear against said vibrator spring at a point approximately opposite the contact on said spring, and means for adjusting the tension of said member.

2. In a vibrating rectifier, the combination with a magnet and a contact point, of a vibrator comprising an armature, a vibrator spring mounted and having one of its ends secured or. said armature, a contact point on the free end of said vibrator spring arranged to make contact with said first mentioned point, a tension spring arranged to bear against said vibrator spring at a point approximately opposite the contact on said spring, and means for adjusting the tension of said spring.

3. In a vibrating rectifier, the combination With a magnet and a contact point, of a vibrator comprising an armature, a vibrator spring mounted and having one of its ends secured on said armature, a contact point on the free end of said vibrator spring ar ranged to make contact with said first. mentioned point, a tension member arranged to bear against said vibrator spring at a point approximately opposite the contact on said spring, and a set. screw arranged to bear against said tension member whereby the tension thereof may be adjusted.

4. In a vibrating rectifier, the combination with a magnet and a contact point, of a vibrator comprising an armature, a vibrator spring mounted and having one of its ends secured on said armature, a contact point on the free end of said vibrator spring arranged to make contact with said first mentioned point, a tension spring arranged to bear againstsaid vibrator spring at a point approximately opposite the contact on said spring, and a set screw arranged to bear against said tension spring whereby the tension thereof may be adjusted.

5. In a vibrating rectifier in combination with a contact point, a vibrator assembly comprising an armature, a vibrator spring mounted and having one of its ends secured on said armature, a contact point on the free end of said vibrator spring arranged to make contact with said first mentioned point,

means for adjusting the distance between said contact points, a tension member arranged to bear against said vibrator spring at a point approximately opposite the contact on said spring, and means for adjusting the tension of said member.

6. In a vibrating rectifier in combination with a contact point, a vibrator assembly comprising an armature, a vibrator spring mounted and having one of its ends secured on said armature,ja contact point on the free end of said vibrator s ring arranged to make contact with said rst mentioned point, means for adjusting the distance between said contact point-s, a tension member arranged to bear against said vibrator spring at a point approximately opposite the contact on said spring, a set screw for adjusting the tension of said member.

7. In a vibrating rectifier in combination with a contact point, a vibrator assembly comprising an armature, a vibrator spring mounted and having one of its ends secured on said armature, a contact point on the free end of said vibrator spring arranged to make contact with said first mentioned point, means for adjusting the distance between said contact points, a tension spring arranged to bear against said vibrator spring at a point approximately opposite the contact on said spring, and means for adjusting the tension of said spring.

8. In a vibrating rectifier in combination with a contact point, a vibrator assembly comprising an armature, a vibrator spring mounted and having one of its ends secured on said armature, a contact point on the free end of said vibrator spring arranged to make contact with said first mentioned point, means for adjusting the distance between said contact points, a tension. spring arranged to bear against said vibrator spring at a point approximately opposite the contact on sald spring, a set screw for adjusting the tension of said spring. I

9. In a vibrating rectifier .in combination with a contact point, a vibrator assembly comprising a leaf spring, an armature secured to said leaf spring, a vibrator spring mounted on said armature, a contact point on said vibrator spring'arranged to make contact with said first mentioned point, means arranged to bear against said leaf spring for adjusting the distancebetweensaid contact points, a tension member arranged to bear against said vibrator spring at a point approximately oposite the contact on said spring, and means or adjusting the tension of said member.

10. In a vibrating rectifier in combination with a contact point, a vibrator assembly comprising a leaf spring, an armature secured to said leaf spring, a vibrator spring mounted on said armature, a contact point on said vibrator spring arranged to make contact with said first mentioned point, a set screw ar-.

ranged to bear against said leaf spring for adjusting the distance between said contact points, a tension member arranged to bear against said vibrator spring at a point approximately opposite the contact on said spring, and means for adjusting the tension of said member.

11. In a vibrating rectifier in combination with a contact point, a vibrator assembly comprising a leaf spring, an armature secured to said leaf spring, a vibrator spring mounted .on said armature, a contact point on said vibrator spring arranged to make contact with said first mentioned point, a-set screw arranged to bear against said leaf spring for adjusting the distance between said contact points, a tension spring arranged to bear against said vibrator spring at a point approximately opposite the contact on said spring and a set screw for adjusting the tension of said spring.

CLARENCE E. OGDEN. 

